Weighing machine



A; LAHSEN. WEIGHING MACHINE. APPLICATION FILED JUNE 20, I9IB.

Patented Apr. 11, 192.2'.

y 5snefrs-snep 1. I. J4* Je l af 919.9 i

A. LARSEN.

. l v WE|GH1NG MACHINE. APPLICATION mw JUNE 2o, 191s. 1,412,184. Patented Apr. 11, 1922. A whims-SHEET 2.

A. LARSEN.

WEIGHING MACHINE.

APPUCATION HLED JUNEzo, 1918.

Patented Apr. 11, 1922.

5 SHtES-SHEET 3.

A. LARSEN.

WEIGIIING MACHINE I APPLICATION FILED .IUNE 20| 15H8. 1,412,184. Patented Apr- 11, 1922.

5 `smears-SHEET 4.

WSN ww A. LARSEN. WEIGHING MACHINE.

APPLICATION FILED lLINE 20. |918. i 1,412, 1 84. Y Patented Apr. 11, 1922.

5 SHEETS-SHEET 5- Zw, W W *L* UNITED STATES PATENT OFFICE.

ARNOLD Lansnn, or CLEVELAND, OHIO, AssIeNon 'ro THE WILLIAM GENT VENDING MACHINE COMPANY, or CLEVELAND, OHIO, .a CORPORATION OF OHIO.

WEIGHING MACHINE.

' Application filed June 2),

To ci] @aimait may concern.' l

Be it known that l, ARNOLD Linsen, a subiect of the King of Norway, residing at (,leveland` inthe county or" Cuyahoga and State ot Ohio, have invented a certain new and ilfle'lul improvement in Veighing Machines, oiE which the following is a full, clear, and exact description, reference being had to the accompanying` drawings.

This invention relates to weighing` machines ot the class disclosed in my former application Serial No. 876,428. tiled December l0. i914, and has to do with improvements on my 'former machine7 although some o'. its 'tentures are of broader adaptability.

ln my 'former construction, jivhen a load was placed upon the load supporting; member or platform the operation ot the electrical apparatus involved in the machine was initiated and it nothing; more was done7 as the insertion of coiin current would continue to .dow until the load was removed, and this resulted at times in a waste of current ii au object were i-.arelessly lett on the platform, .5-.lso` it was necessary to depress the platform or load siunaortinc-` member before inserting; the coin. for otherwise the coin would Vpass freely through the coin chute and be returned to the operator, the temporary holdingY`-` means tor the coin beinn' depen dent lor its operation upon the depression ot' the load supporting` member.

ln my 'former machine the heavy Weight vas moved intermittently through successive positions on its beam. the weight beine' required to dwell at each position for a brief space or time to give the scale beam an opportunity to tilt it the heavy weight were overlailanced by the load, so that the operation ot the heavy weie'ht consumed considerable time; and at each position there was circuit through a pair ot contact points. and this continual use of the points resulted Ain l'hci. rapid deterioration. Also. in instances where thc current was comparatively strong;7 the light weight was apt to travel so fast that its momentum would carry it beyond balancing` position, and cause trouble in the operation of the machine. A

lt isthe objects of my present invention to overcome the foregoing and other more or less undesirable features by providingr a construction which is rendered operative'by the joint acts of placing' a load upon the a breaking andnialzinp; olf an electrical Specification of Letters Patent. Patented Apr.' 11, 1922.

191s. serial No. 240,922.

load supporting` member and the insertion ,or comj but which remains inoperative Vuntil both acts are performed wherein a coin may be inserted, prior to placing the load upon the load supporting member, and retained in correct position to assist in the operation ol' the machine when the load is deposited on the load supporting member wherein the platform or load supporting member may Abe depressed in the absence of a coin. without establishing' an electric circuit; to provide an arrangement whereby the movement oi the heavy weight is rendered substantially l continuous until it reaches aposition where it is Overbalanced by the load; and wherein means are provided ior regula ting the speed of the lightweight so that the machine may be adjusted in this respect to lit varyingl current conditions. n

Further objects will become" apparent as l proceed to describe my present construotion .y among them being a simple adjust-ment lthrough which Athe effective value ot one of the lnilancinpu weights may be conveniently altered without having' to load the weight; and the provi'iion et means tor accomplishinpa oluicliy break of the circuit which controls the movements O' the heavy weight.

The several objects oi my present invention are attained in the construction illustrated in the drawings accompanying and Aforming a part hereof and wherein Fig'. l is a sectional front elevation of my improved machine; Fig. 2 is a sectional plan on the line'2-2 ot' Fig. l; Fig. 3 is a transverse vertical section on the correspondingly numbered lineo?. Fin'. l; Fig. l is a sectional` rear elevation ol' the head ot the machine*` the same being somewhat enlargedv over Fig. l. g 5 is a right hand end ele 'ation of the head; 6 is a central vertical section through the platform or load supporting` member and partsassociated therewith, and includesthe switch controlled by the platform; Figs. 7 and 8 vare details ol the coin chute;` Fia: 9 `is a wiring,` diagram oli' the machine; and Fig. l0 a sectional detail of the heavy \veight, sl1o\ving its adjustment.

I have taken as a basis for my present construction a standard type of platform scale, redesigned to lit the requirements of my invention. This scale is made up, generally, of a base l from an extension 2 of which y rises a column Or `pedestal 3, broadened outu at its upper end to 'form a head as shown at 4, that is surmounted by a plate 5. A branched scale beam, designated 1jenem-ily 8, is pivoted at 9 to a 'forked bracket ltlthat rises from the plate 5, the beam comprising branches l2 and 13, the outer ends of the branches being connected by a bar 14 having a. projection l5 which extends through an opening in a. loop 16, rising from the plate 5 near its right hand end, as viewed 1n Fic. l.

le'ft oi` its pivotal support 9, the beam has articulated to it a clevis 18 through the lower end of which is engaged a hook 19 that extends downward through an opening in the plate 5 where its lower end is connected through a clevis 2O with one end ot a lever The opposite end ot the lever has pivotal connection at 23 with a hanger 24, depending from the underneath side of the plate 5. At a pointV substantially central ot the column 3, the lever Q2 has connected to it a clevis 25 through which is engaged the hooked upper end ot a rod 2G that depends within the column and has connection, through the intervention ol what I shall term the platform switch, designated genen ally 27, with a rod 28 the whole constituting, in effect, a direct connection between the lever 22, and a member 30 that terms a part of the leverage arrangement which sustains the load supporting member or platform P All ot this, with the exception ot the platiiorm switch 27, is common practice and is described in my former application above reterred to, wherefore it is deemed unnecessary to describe here.

From Figs. l and 6, it will be seen that the plat/form switch 2l' comprises a plate 36 that has its upper end connected to the rod 26, and to the lower end of which is pivoted an L-shaped lever 38 having its horizontal branch connected, through the hook 39 to the upper end ot the rod 2S. Adjacent its upper end, the plate 36 has fastened to it a block ot insulating material 40 carrying two carbon contact points il. adapted to be bridged by a metal disk that is yieldingb7 carried, through the intervention of a piece of insulating material 43, by the upper end of the L-shaped lever 38, when said lever is swung under the influence ot a load placed upon the platform and acting to depress or draw down upon the rod 2S. This action of the L-shaped lever is resisted by a comparativelv light spring which serves nominallv to maintain a separation o'F the contact points Ll-l and disk 4t2 through an elevation of the horizontal branch of the lever.

ldlhat l shall term the light weight L8 is slidable along the branch l2 of the scale beam, this beam being graduated according to prevailing practice; and a heavy weight 5() is slidable along the lower branch .'13, the latter weight having anti-'friction rollers 5l that traverse the upper edge ot the beam. lt .will be observed that the uppei` edge ot the branch l?) is notched at regular intervals, the notches occurring at points representing, in the present case, 5t) pound graduations, so that a shitting of the heavy weight 'trom one to the other oi" adjacent notches ei'- liects a difference of titty pounds in the weights thus registered. And in this conncction it may be pointed out that the capacitj.' ot the upper branch l2 is 5() pounds.

Supported by and between bracket il) and loop 16, to the rear oit the scale beam, is a trame :Eel comnising 'upper and lower rails and 5G, respectively, and a central bar having notches 58 extending upward 'ti-om its lower edge, there being a notch 'toi' cach graduation ot the lower or heav;7 weight scale beam. t mover is shittable along each ot the rails and 5G. that ol the toi-nier heilig designated 59, and the latter, (ill. The upper end ol.l each ot the weight movers is forked and a pin (il, ot thc light weight is received between the ln'anches ot ther mover 59, while a pin 62 o'l" the hcavjyv weight reposes between the branches oi" the mover (lll. lVhen either ot the movers is shittcd along its respective rail, the weight associated with i t will bc moved along its beam. The weight movers are shifted by mechanism which l shall now describe.

To the mover 59 is connected the ends ol a flexible element (5ft, such as a cable. This element is guided over sheaves (55, titl.. and

(il, that are disposed upon the trame 5t in' such a way as to provide a portion that is carried downward through an opening in the plate 5 to where it is attached to a drum (see Fig. 23), fixed to a shatt (3) that is jonrnalled within a bracket Tt). suspended Afrom the plate 5, l'Vhether the element (il is a continiwus piece. or made up ol' seprnfate pieces extending `trom the drum to the mover. is immaterial. lpon rotation oit the drum` a part ot the liexiblc element will be accumulated upon the drum while another part is being paid out. thereln,Y to shiit the mover 59, along its rail 55. and consequentliv thc. light weight i8 along the upper branfzh ot the scale beam. second lieviblo clement or cable T2 lcd i un the right hand end ot the mover 59, (as viewed in Fig. over a sheave Gl, sheave 72% that situated below the druin (3S and joui-nailed upon a which is carried bv the shell ol the liead and thc-nce over a similarlyv supported sheave T5, located above the column and from which the element or cable degiei'uls. the end oill the element havingv attachml to it a weight 7G. Bv means ot this weight. the mover 59 is returned to and imrmallj-.fv maintained in the position shown in the drawings.

A flexible and, in elfect, a continuous elcment or cable 7S, connected to the weight lOll llll

lll() mover 60, trained about sheaves 79 and 80 (the latter being a three-part sheave, as shown in Fig. in such a way as to provide a portion that is passed downward through an opening in the plate 5, where it is attached to a drum 81, fixed to a shaft 82 that is joui-nailed in a bracket 83 carried by the underneath side oi the plate identical with the arrangement described in connection with the former drum 68. 'Rotation oi the drum S1 in one direction etl'ects a movement of the mover along its rail 56 trom normal position toward the right, as viewed in Fig. and the mover adapted to be returned to normal position, when released, by a weight 811 that is suspended trom the lower end oic a 'flexible element or cable 95, that passes up and over the shea\,f'es

@o and Si' and over onel oi the 'lo prevent unsheavc 8() to the mover Gti'. due swinging ot' the weights 7 6 and 841 when the machine is moved, they are preferably guided within tubes 98, vt-irtically disposed within the pedestal Ratchet wheels and 91 are secured onr the forward ends of the respective drum shafts 69 and 82. Substantially midway between these ratchet wheels, an arm 92 is swingingly suspended irom a bracket 93 that carried by the plate 5. Pivotally connected to thelower end of the arm 92 are the inner ends of bars 9d and 95, the tormer having its outer end articulated to a link 96 that is pivoted to the lcore ot a solenoid 97, while the remote end oi' bar k95 is similarly connected, through a link 98, with the core oi a solenoid 99. Pivoted to the link 96 is a pawl 10() tor cooperation, under certain circumstances, with the ratchet 90; while a paw] 101 is pivoted to link 98 for cooperation with ratchet 91. The ratchet engaging ends oit the pawls and 101 are elevated by springs 102 (shown in each instance as connected at one ot their ends to the pawl and the other to the link). The extent to v which the springs 102 may elevate the pawls cio is limited by the engagement of the inner ends ot the pawls with the bars. Under normal conditions, with the solenoids 95 and 97 deenergized, the pawls 100 and 101 are beyond the'scope oli'ratch'ets 9G and 91; but when either oic the solenoids is eneigizeo,i;lgie pawl. associated with it is drawn into contactwith the teeth of the ratchet, so that the vibration of the arm 92 will effect` intermittent rotation oit the corresponding ratchet, Vand the drum associated therewith. The arm 92 is vibrated by a motor 105, shown as carried by the platea, and which has on its @hatt a pinion 106 meshing withl a gear 107 on a shatt 108 that is suitably supported ad'- jacent the motor, the shaft 10S terminating substantially `flush with the front tace ot the gear so as not to interfere with the operation oiI a pitnian 109 that has one ot its ends pivchute 130 oted to the arm 92 and its other end jouw naled upon a crank pin 110 that is carried by the gear. j Y

To prevent return movement of the ratchets 90 and 91, I provide detente -112 and 112% which are arranged to engage the respective ratchets when thrown within the scope thereof, the former detent being pivotally coni nected to the upper end ot an arm 111i, which, in turn, is pivoted to a bracket 115 depending from the plate 5, while the latter detent is likewise connected to an arm 116 pivoted to a bracket 117, also carried by plate Coin` pression springs 120, interposed between the detents and plate 5 tend to depress the detente to the extent permitted by a stop portion on each ot the arms which is engaged by the underneath side ot the detent, as clearly shown in Fig. 1. It follows from this that a swinging of the arms 114i and 116 in a direction away from their respee tive ratchets will result in a lowering ot the detents into contact with the ratchet teeth, and this is effected by a solenoid that is suspended from the lett hand end oit the plate 5, as viewed in Fig. 1. The core of the solenoid 1221's made in two sections one having connection with the arm 111;, while the other isfconnected to an auxiliary arm 124 which has its lower end connected, through a link 125, with the tree end ot arm 116. Upon energization of solenoid 122, its opposed core sections are sucked inward (each being limited in its inward movement, as by a stop carried by the section), and the inward movement of the section connected to arm 114i; will result in a rocking of the arm to depress the detent 112'while the inward movement of the other core section will swing the arm 124, and consequently, by reason oi its connection through link 125 with arm 116, the latter arm in a direction to depress detent 118. Springs 12S, connected to the arms 114C and 1211, oppose the attraction of these arms by the solenoid.

`In Figs. 7 and S I have shown in iront and rear elevatioin respectively, the coin incorporated in my present machine, the same'being quite similar to that employed in my former constructiom The essential difference is that in. the' j iresent case the coin is retained between the jaws ot the coin holder by reason of the normal relation of the jaws, and is released when one ot the-*jaws is' moved by electrical means; whereas in the former case the' electrical means acted to place the jaws in coin retain,- ing condition as against their normal relation when a coin would be permitted to pass between them. Y, j

It will be seen upon reterringto Fig.V 7 that the chute contains an inclined branch 131 which opens, at its lower end, into two vertical branches 132 and 133. Below the 'former is situated the anvil 134, and the l lO helov: lireneh 133.

@riposi i ielov: the anvil lfl-` is situated retaining' jaws 135 and 136, the

l "-ijl et 13"( te 'the body of the .nig toward end om the aw, the saine heine; retained norf' toward the latter jew hy a Shrine; 138. 'ein engaging portioi e o'll the jiairs are confinati e material inenlateil 1 o'lt the .s netnre hy portions ot '1 are eoinnosed et i'ion- ':onflne ,in electro-magnet lll-) is Sit- C" ion with respect to the lian' tot' a aiftthe 'ia r when energized, e. portion 'v W parssrme` in 'proximity to the were el' and constituting the nianent n iagnet 142 ":erte'l it travels down the inelined hraneh yi. its inientinn earrji'ine' `it over hrenoh i3?, and depositing' it in hranol'i 1.32, Drooiiiliyj dirfrl'ly tl rough hra'neh the eoin anvil time mit,

it 'Freely drops to e snitahle reeeptecle lieneath. a` leafl enters h faneh 131. itil momentum heine; imatl'leeted h v magnet will 'm'ry i t to hrnneh 132 and eanses it to he directed to the nnril 134-; lint being;- of a non-resilient oharmfter, the Slug; Will not partiriimte in the recoil oit the anvil Where4 'tere it 'will drop o'l through the een laetween the anvil and the coin retaining iarrs .lo l'nd i plat-e with the 'Former epnrions eoin. .il .fnitahle receptacle 'provided` 'tor the roins lint it is on'ntted rn the illnetmH tions to rereal more important parts. rlhe location ot the eoin chiite iS indicated. in Fig. l in (let-Jntl,-tlaeh lines. and in 2 and in tnll lineS.

rnlhe 'ttirfen'oine1 dieenesion het heen dirented to the ineehz'ini fal 'features et the present einhod'inient. and he'iiore proeeedingg w'th the electrical :side ol the in .'ention l may point ont, in l. 2 and A5i.y Certain solenoids whir'h :ire situated, 'tor eonrenienfe. l'ieneath plefe 5 and snspenoed theretron'i. These solenoid,` Control eleetrie Switches. and "Will he referred to l@enefallf. as preliminary eiviteh H5; main switch7 14:6; and entent twitch 5h27. Certain eirenite` are oontrolled hy Switeh that iS actuated hy a solenoid, loeated7 'for (',onvenienee.7 Within the eolinin the sameheine designated generalliY lil-5l; and Jthe st-rnetnii'e ot this Switch tra inehi l 150 which modifies the @een eno is ilhist'ated in dotted in i g. l, the upper end of the soleno attached to it the piston l l ot' 'the dash potT ir accordance with the correspomling element ot iny 'Former rnachine` und. in the present instance an apertnre i532 ie mede in the wall ot the dash* wnot Cylinder slile'lit'ltfv ehove the lowest position o' the 'pieton so as to he norn'ially nn Covered to permit initial escape ot the air aljore the pieton. and joerinit rapid incipient notion ol 'the Solenoid. the aperture heine,-

Llf d as soon ne the visten rises to its zone "lite" which the dash not .ir-s etlieetive as a ing' ineans tor the solenoid (fore. at 'which governs the speed o'lE the 'nioretard r leest o. lll? Shown at as earried hy the wall o' the head lolli the machine.

tilitnatml beyond the outer end ot' the e 'al e hearn and mounted upon plate 7 is a hlorlc i553 oi" iisnlating' material eontaii'iiirej 'lionr w 0i- W ith the ,f-'imilnr switch is located :idiaeent the oriposite rin-tl et the. scale heain and ooinprisee a liloel lll@ ot' insulating` material having? mercury wells within 'which extend points 'l (33 that. are Connected. to hnt insulated 'troni the .fseale heani,

xtendinp; along' plate 5 beneath the iframe,

is :i har )G5 ol insulating materia-l haring' exposed. through its opper surface. 'two eeries ot :ontaet points, thoee o'l" one. series heinij designated 166, and those o'l the other 167. the noints heine' arranggyed in pairs eoneisl'ii respectively. ol! one o'l2 eznh ,sei-ies: @no n Spring depresse-d shoe 169 ot wow dnctive material ie carried. and adapted to he SliilH hr Weight inerer Gl) ae it trarele along its rail 5G, the Shoe heine; ot snel] seep@ as to hridgl'e the. Contact ooints olV the respective pairs at it paeses thereover. Then the parts are in normal (iondititnn the .shoe renoses above and l'iridggjes one eontaei' point ot the lirst pair and a special Contact point 170.

For brevity. and for elearness as well` l she l deserihe the operation o'l the rneehine in Connection With the wiring' diagrian'i of Fig'. 9. The Source ot power is represented lijn the positive and negative sides of a inain line 170. One side ot the line Jjhe positive 'For example7 has eonneetioi'i through eon- (lector lll with one side ot the il'ilat'lorni Switch 2T, the other Side ot the .switch hav l'IO l inw ard.

ing connection, through conductors 172 and 178 with jaw 135 of the coin retainer'. The other jaw 136 has connection, through the conductor 174, with the solenoid winding of the preliminary switch 145, this conductor including also one point 175 of a three-point switch, the other points being designated 176 and 177, all of which are adapted to be bridged by a disk 178 of conductive material, such as copper, that is carried by the core of the solenoid, when the coro is sucked The opposite endl of the solenoid winding of the preliminary switch has connection through conductor 179 with one point of switch A, While another point of the latter switch has connection through conductor 180 with the opposite or negative side of the line. Assuming that a coin is sustained by the coin retaining jaws to make contact between them, and a load has been deposited upon the load supporting member or platform of the machine to close the platform switch` it will be seen, from the foregoing', that a circuit is established to actuate the preliminary switch, it being ung derstood of course that switch A isnormally closed onaccount of the normally depressed condition of the scale beam. The solenoid of the preliminary switch thus being ener* gized will close contact between points 175, 176 and 177 resulting in a part of the cur-r rentintroduced through conductor 174 being diverted through conductor 182 to one `side of the winding of the solenoid incorporated in the main switch 146, the conductor leading also to one of the three-points 184,` 185 and 186 of the main switch, these points being adapted to be bridged by the disk 188 that is carried by the main switchy solenoid core. The opposite side of the latter solenoid has'connection, through conductor 190 and former conductor 180, with the negative side of the circuit. ing the preliminary switch, it may be eX- plained that its third `point 177 has'connection through conductor 192 with one side of the solenoid of cut-out switch 147, the opposite side whereof is connected throughthe conductor 193 with the mercurywell of 159a dips, the current returning through this well. the point 159a and the adjacent point e 159,l to the negative side of the circuit vthrough conductor 180. The disk or bridge member 195 that is carried by the core of the cut-out switch solenoid is adapted to bridge an upper pair of contact points 196 when the ,solenoid is energized, or a lower pair 197 when de-energized. v The governor,

switch 148 is likewise adapted to make contact between an` upper pair of contact points 200, when the solenoid is energized, and between a lower pair of contact points 201, when fle-energized. A branch 202 leads from conductor 192 to one of the points 201,

Before leavof the electric motor 105, the heavy weight drum will be rotated to move the heavy weight 5 0. Upon actuation of the platform switch 27, the current is led from conductor `172, through conductor 186iL to point 186 of the main switch, thence through the bridge member 188 of said switch, through conductor 206, from point 185 of the main switch, to one side of the motor 105. From `the opposite side of the motor the current,

taking thel course of least resistance', passes through conductor 207, points 196, plate 195,

conductor 208, to switch A, from which it returns to the line.y A part of the current, however, is diverted through conductor 210, leading from conductor 206, throughl the winding of magnet 140 (associated withthe coin retainer) through conductor 211, to point 170, thence through shoe 168, to adjacent point 166, from which it returns through conductor 212 to'former conductor 17 9 which leads to switch A, and through said switch to the line.v Thus the jaw 186 will be moved to release the coin` the presence of the coin `between the sides of the switch represented by the jaws 185 and k136 being no longer 1 necessary, since the main switch is closed. ri`hrough a conductor 214, which has connection with conductor 206, a part ofthe curyrent is diverted through the solenoid 122 that controls detents 112 and 113, as previously explained, the current returning to the opposite side of the linethrough con-v Vductors215 and 190.

eviewing in n general way the foregoing operation, it will be seen that upon an inser- VAtion of a coin inthe machine and the deswitchA into which the adjustable `pointposit of a load on the load-supporting member or platform, the motor. is almost instant v set in operation; the. pawl 10.1 is elevated into contactwith the ratchet 91 `so that the vibrations of the arm 92, produced by theA motor, will be transmitted through the bar95 to the drum 81, and through thefficxible elementor cable 78 to the mover 60 so that the heavy weight 50 willbe slid inward along the lower branch 80 of the scale beam; and the detent 113 open the Circuit iiieluclingv the magnet 140 so that it is deenergized and renilinfs so throughout the rest o1i the operation. rthe purpose ot the governor switch 1.18 ie to inoinentarilj7 break a eireuit inade by the bridging' oi a pair ot the eoiiteet pointey 166 and 167 When over run and thus lnrirlged h the shoe 168, resulting, as will he evident 'from the :Alesoription to 'liollow4 in an interruption in the travel ot the Weight mover G0v` the interruption oeourringgj, it may he efe plained, when the pin (32 is direct-lyv beneath one ot the notches 58 in the har or plate 57 so that, i'l the weight on 'the platform overhalanees the heavy weight 50, the weight may rise With ite pin 6Lv within 'the noteh. rhe eoleiioidv of the `Qgtweror Switeh is in the circuit introduced Ytroni point- 15'7 ot the preliminary sviteh through concluetor 192. a l'naneh 21S which connects with one ond ot the Solenoid winding. a conducator 21.() which leads `troni the opposite end ot :leid n'ii'uling to one ot the Contact points ol" pair 19T, the other eontaft ol the pair haring connection through rmiduetor 5220 with the series ot eontaet points 16T. 1t will he recalled. howerer, that the eonneetion het-Ween the points oi the pair l 11)?, is hrolen hy reason oi" theA elevation ot the member 195 Carrier hy the Core olr the nonT energized Solenoid ot the eut-out Switch 14:7 so that, at the present timeq the governor romaine inoperative and the Hon' o'l" Current through the Contact pointu4 ot the pair 9,01 remains Constant wherefore the liezvy Weight will more Without hef-:itation across the Successive pairs ot Contact points; 166 and 16'? until Said Weight rearhe.` a position where it is; orerhalanced h v the load. nWhen it rearhes such a pos' on. the outer end. of the scale heani rises to remore points: 15S) and 159 troni the niereury wells Whirh eon- Stitnte Switch A th ljnealringr the other Connections ina de through this writeln while estahliehinrr other connections through Switch B hy reason ot the depression ol the points 161% into the Inereury Wolle ot the latter Switch. Betere leavi e' this phase ot the operation, attention is Called to a lover 225 that is pivotedV to one Side Ot the loop '1G and extentie trtmm'erSelr thereot 4heneath the extension l5 ot the Seule lietnn. A light Spring' i226, that is anchored at its Upper end to the loop and at its other end is ('onneeted to the 'tree end, oe" the le 225 tende to elevate the scale heain just heliore the Weight 5() reaches the position Whereat it ie permitted to rise heeauee ol2 the oresence oi one ot the notches ,l8r it heine; eX- pleined that the elevated pooition ot bar 57 permits at any time a slight rise o1 the Scale l'veain. The initial upward movement ot the sleale l musee the withA .fnairal ol the hnely adjusteu point 1091 'trom the mercury, prior to the Withtlawal of the points l59 so that the eirouit inelutliiilg 4 o Solenoid winding ot the eut-out Switch ,t ifs lnfolren to deenerggixe the f-aid Solenoid and `permit the eut-mit riuf'itch to return to .i nml eondiz'iiou. when the ronlar, pointe i are hridged to throuv into circuit the whirling ol the governor switch Solenoid. fig a result olf this. when the heavy weight doeii reach position Where it ie perniitted l to fiee. with thax shoe 16H ol1 its; mover lll; laidgingg he adjacent panot Contact nte the ,serienv 11515 and 113i'T Vthe goverf-m'ncch will he actuated to remove its e ineniher 22S 'roi i, the pair of contant milite` Elli? auth alter :i Slight inten-:al7 olif'rh eontn-t het een the points olE the pair 20() which are included in the saine rireilit at; the vordert pointeA @fili one ot the roniuft po s; ,."ll hzwino' connection with eonduetm'- 192 through .ln-anch Q29. i point hais Connection,

.rile i iper Set ol" Conta/"t pointel are hridfjezl t o'ht mover jl? will he urgfjefl 'l'ornferd SullicientljY to iritlnlrarf its #shoe 'l'wui one o V the unitarie wherewil'h it eofera'ire and open the eireuit to the gorlfrnor .'olenohh deenerejizinjr it and allowing :nielr otateih the interval ot `time "fz'hirh the rireuit ie izilierriuyted ie 'erueil -h'r tl n daehj'io llh ofnistitutecl to y Tablon of thin` l, lf in 'the eirf'uit Whieh lo the infn'einent ol" tho weight- 50, ,.tlioiont time zliorderl Vior the pin G2 olf ihlV o rire within lilnx adjacent i L i lle a (juii'l oreal( het reen points; 201.

n henrf.' wii'hl. is oww i n, and the er'ale herrin la to hreul eonawftionnl llirouggli f-"rfitrh .M while 'thi` oi'ipor-silu" euri ol ihr train desee ids to render olllertire the si@ rh lh the rurrout n'ill lor.' 'trom the motor i (whieh arts to render elle tiene hel'n'ren the motor and the light weight drinn) the ei'ffuit including the Solenoid 97 heling roinpleted through Condurtor 24?), Switrh `il, and 'Former eonducore @fl-.1 and. 180. Se longv es the mein switch is maintained flosed. eurrent will Continue to llonf ihroutfjli the Wiruliuggj ot the detent solenoid 122s as previously explained, and .inasmuch lil) detent solenoid so that the drums are re-` leased, allowing Weights 76 and 84C to retract the balancing Weights.

The adjustment hereinbefore referred to for altering the effective value of the heavy' Weight, is illustrated in Fig. 10. The Weight has threaded transverse bore 250 within which is screwed a plug 251 constituting an auxiliary Weight. lt Will be observed that the bore extends substantially in the direction of the scaley beam, so that by shifting the auxiliary Weight 251, it `Will vary the depressing` effect of the Weight upon the beam. Aset screvT 252 Fig. 1) is threaded through the side of the Weight 50 for engagement With the auxiliary Weight to lock lock the latter in place. The foregoing embodiment is merely illustrative of this feature of my inventionfor it is obviousthat it is susceptible to many` modifications and employment in different types of scales. y

Having thus described my invention what T. claim is:

1. In a Weighing machine, the combination of a load supporting member, a scale beam operatively connected thereto, a Weight movable along the beam through successive positions from the outer toward the inner end of the beam, means preventing the beam tilting' except when the Weight occupies one of said positions, means'for moving the Weight along the beam, governing means arranged to suspend operation of the Weight moving means when the Weightis in any one of the aforesaid positions, and further means for maintaining the governing means inoperative until the Weight arrives at a position Where it is overcome bythe load.

2. In a Weighing machine, `the rcombination of a load supporting member, a scale beam operatively connected thereto, a Weight movable along the beam throughsuccessive positions from the outer toward the inner end of the beam, means limiting the eleva'- tion of the beam to an incipient rise only, except when the Weight occupies one of said positions, means for moving the Weight along the beam, governingumeans arranged to suspend operation of the Weight moving means when the Weight is in any one of the aforesaid. positions, and further means aeting to maintain the governing means inop* erative and Which is rendered ineffective upon an incipient rise of the beam.

3. In a Weighing machine, the combination of a .load supporting member, a scale beam operatively connected thereto, a Weight movable along` the beam through successive positions from the outer toward the inner end of the beam, means restraining the beam against any but a comparatively slight rise except When the Weight occupiesr one of said positions, means `for moving the Weight alongthe beam, governing means arranged to suspend operation of the Weight moving means when the Weight is in any one of the aforesaid positions, means tending to tilt the beam, the same becoming effective as the Weight approaches a position Where it is overcome by the load, and further means acting to maintain the governing means inoperative and which is rendered ineffective upon an'incipient rise of the beam.

1. In a Weighing machine, the combination of a load supporting member, a scale beam operatively connected thereto, a lWeight movable along thebeam through successive positions from the outer toward the inner end of the beam, electric mechanism for so moving the weight and involving a `Weight mover, a series of pairs of contact points, the Weight mover carrying a bridge memberarranged to bridgethe contact points of the, successive pairs of the series as the weight occupies the aforesaid successive positions, anelectr'ic circuit including the Weight moving mechanism,an interrupter in said eircuit, electromagnetic means for actuating the interrupter, a circuit including said electromagnetic means` and the Aopposed Contact points of the aforesaidseries, a switch in the last mentioned circuit, electromagnetic means acting when energized to open the switch, a

circuit including the last mentioned electromagnetic means, andl a switch in the lastv mentioned circuit that is opened upon an incipient rise of the scale beam,` A

`5. In a Weighing machinathe combination of a load supporting member. a scale beam operatively connected thereto.` Weight movable along the beam through successive positions from the outer toward the inner end of the beam, electrical mechanisin forse moving the Weight and involve ing a bridge member that is movable in unison with the Weight, a series ofpairs ofy contact points. the' aforesaid. bridge member being arranged' to bridge the contact points 'of the successive' pairs of the series as the 'Weight occupiesthe aforesaid successive pok sitions, an electric circuit including the Weight. moving mechanism. an interrupter in said circiut` electromagnetic means for actu'- ating fthel interrupter, a circuit including said electromagnetic means and the opposed contact points of the aforesaid series, a switch in the last mentionedcircuit, electromagnetic means acting when energized to open the svvitch, a circuit including the last one of said weights normally reposing at the inner end and the other at the outer end of their respective branches, the latter normally maintaining the outer end of the beam depressed, an electric motor, operative connections between the motor and the weights for moving the weights along their beams, said connections being rendered ineffective when the beam is in balancing position, an electric circuit including the motor and maintained closed by the depression of the outer end of the scale beam, and a second circuit also including the motor and maintained closed by the elevation of the outer end of the scale beam, and means included in the last mentioned circuit for controlling the speed of the motor.

13. In a weighing machine, the combination of a load supporting member, a branched scale beam operatively connected thereto, a Weight movable along each branch, one of said weights normally reposing at the inner end and the other at the outer end of their respective branches, the latter normally maintaining the outer end vof the beam depressed, an electric motor, operative connections between the motor and ythe weight reposing at the outer end of its beam branch said connections being rendered ineffective by the rise of the beam, operative connections between the motorand the other weight, said connections,y being rendered effective by the rise of the beam, all said con nections being rendered ineffective when the beam is in balancingy position, an electric circuit including the motor and maintained closed by the depression of the outer end of the scale beam, and a second circuit also including the motor and maintained closed by the elevation ofthe outer end of the scale beam, and means included in the last mentioned circuit for varying the voltage of the current through the motor. i

14. In a weighing machine, the combination of a load supporting member, a scale beam operatively connected thereto, a Weight movable along the beam through successive positions from the outer toward the inner signature.

end of the beam, means preventing the beam rising except when the weight is in one of said positions, electrical mechanism for moving the weight, an actuating circuit for ksaid mechanism, an interrupter in said circuit comprising oppcsed pairs of contact points, the contact points of each pair being included in the circuit, a bridge member movable from one pair of contact points to the other electromagnetic means arranged to so move said bridge member when the weight occupies any one of the aforesaid positions, and means for governing the movement of the bridge member, said means consisting of a dash pot cylinder and a piston therein, one of said elements being operatively connected to the bridge member while the other is supported in operative relation to the first element, the cylinder having a vent through which Huid contained therein may escape upon initial movement of the piston but which is thereafter closed to retard the movement of the piston.

15. In a weighing machine, the combination of a load supporting member, a scale beam operatively connected thereto,a Weight movable along the beam through successive positions from the outer toward the inner end of the beam, means preventing the beam rising except when theweight is in one of said "positions, electrical mechanism for moving the weight, an actuatingA circuit for said mechanism, an interrupter in said cir- `cuit comprising opposed pairs of contact points, the contact points of each pair being included in, the circuit, a bridge member `movable from one pair of contact points to the other means arranged to so move said bridge member when the weight occupies any one of the aforesaid positions, and means for governing the movement of the bridge member and actingto permit rapid initial movement of said bridge member whileretarding further movement thereof.

In testimony whereof, I hereunto aiiix my ARNOLD LARSEN. 

